Friction stir welding device for producing a weld joint

原文（中国語）

The invention relates to a friction stir welding device for producing a spot-shaped or linear weld joint between a plastic plate or a plastic moulding and a metal or plastic substrate, comprising a welding head and a manually operable or controlled linear feed for the linear movement of the welding head, wherein the welding head comprises a rotatable or oscillatable stirring pin and an outer sleeve surrounding the stirring pin, wherein there is provided a reservoir for receiving material displaced by the stirring pin between the outer sleeve and the stirring pin, wherein the reservoir is limited by a step formed integrally with the outer sleeve or by a reservoir sleeve provided between the outer sleeve and the stirring pin.